Here are drm messages from logs booting up with drm.debug=14 with 5.0.0-11.12. You can see the link training issues are still present.
21:00:11 kernel: [drm:intel_dp_get_link_train_fallback_values [i915]] Retrying Link training for eDP with same parameters 21:00:11 kernel: [drm:intel_dp_start_link_train [i915]] [CONNECTOR:85:eDP-1] Link Training failed at link rate = 324000, lane count = 1 21:00:11 kernel: [drm:intel_dp_set_signal_levels [i915]] Using pre-emphasis level 0 21:00:11 kernel: [drm:intel_dp_program_link_training_pattern [i915]] Using DP training pattern TPS1 21:00:11 kernel: [drm:intel_dp_set_signal_levels [i915]] Using pre-emphasis level 0 21:00:11 kernel: [drm:intel_dp_start_link_train [i915]] Using LINK_RATE_SET value 04 ** Attachment added: "dmesg with drm.debug=14" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1821820/+attachment/5255557/+files/log%20messages -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1821820 Title: Cannot boot or install - have to use nomodeset To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1821820/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
